Tweaks to popup demo.
Tweaks to popup demo.

dmiedema/calloutview,Aiwis/calloutview,mapbox/SMCalloutView,u10int/calloutview,XBeg9/calloutview,Petvetbook/calloutview,u10int/calloutview,Suninus/calloutview,Petvetbook/calloutview,Suninus/calloutview,dmiedema/calloutview,XBeg9/calloutview,nfarina/calloutview,Aiwis/calloutview,nfarina/calloutview,mapbox/SMCalloutView